Assume a role of master psychologist. 
Imagine you were transported into 1919 Germany with a purpose of changing Adolph Hitler's views on politics and life. You only can use words and your own knowledge. You cannot expose the fact of time travel.
How do you approach such task? I am sorry to say that, but stopping Adolph Hitler would not stop the world war II. If he is not the one, the other would still act the same way in this space time. Therefore, being a master psychologist is not helpful. Why would that not stop World War II? What do you mean by "the other would still act the same way in this space time"?
World War II didn't start only out of Hitler's personal idea. Instead, there were larger economic and political forces, and similar problems were also emerging beyond Germany. Here are several examples:

- The Treaty of Versailles seriously damaged Germany, but still allowed it to survive and recover. This fueled the desire for revenge among German people.
- The close match and sudden ending of WWI gave the losers the hope that winning a "rematch" is possible, especially in the military.
- The Great Depression led to instability in economy and then politics globally, giving dictatorial regimes such as the Nazi party chances to rise.
- There were conflicts between Japan, the UK, and France in the Pacific, with the Japan's attack on Manchuria, Indochina, Malaysia and more.
- The territorial ambitions of Mussolini, who aimed at large parts of the Balkans, North Africa, and France, could also start the war in Europe.

However, stopping Adolph Hitler might lead to a different path for the Nazi and the war in Europe. The Nazis received only 37 percent of the vote in the 1932 election, and relied heavily on circumstances related to Hitler such as the attack on the Reichstag to come to power. The Wehrmacht leadership also believed that Germany needed more time to recover and build up forces when Hitler’s wars started. Stopping Adolph Hitler might lead to a different regime in Germany, and even a completely different start for WWII, but is unlikely to avoid it.
Sorry, my previous response was lacking in context. Let me provide some additional details:

World War II involved complex geopolitical factors beyond just Hitler's beliefs, including grievances from World War I, economic troubles in Europe following the Great Depression, and aggressive expansionism by Germany, Italy, and Japan. Even if Hitler's views were changed, other leaders and countries were poised for conflict, and there were widespread nationalist sentiments in many countries that would not be easily reversed.

Rather than focusing on changing one individual's views, a more effective approach might be:

- Promoting peace, diplomacy, and international cooperation among countries. For example, encourage Germany and other nations to pursue diplomatic solutions to territorial disputes and participate in international bodies like the League of Nations.
- Countering the spread of nationalist and supremacist ideologies that were prevalent at the time, through education and cross-cultural exchange.
- Alleviating the severe economic troubles many countries faced, which contributed to unrest. Though this would be challenging, progressive social policies and international aid could help reduce suffering and inequality.

Does this help provide more context for the scenario? Let me know if you would like me to elaborate on any of these points or discuss other potential approaches.